Journal of Membrane Science & Technology

Power generation utilizing pressure retarded osmosis with low-grade heat regeneration

2^nd International Conference on Membrane Science and Technology

September 13-14, 2018 | London, UK

Hameed B Mahood and Adel O Sharif

College of Applied Sciences-Sohar, Oman
University of Surrey, UK

Scientific Tracks Abstracts: J Membr Sci Technol

Abstract:

In this paper, an innovative pressure retarded osmosis (PRO) osmotic heat machine (OHM) for power production utilizing alcohol (mainly ethanol) as a draw solution coupling with a low boiling point temperature regeneration process is proposed. The forward osmosis (FO) phenomenon is harnessed to generate a high water flux (permeate) through a semi-permeable membrane to pressurize the draw solution (DS) stream, due to the osmotic pressure difference between the two fluids (feed solution and DS) streams on both membrane sides. The diluted and pressurized DS solution stream is expanded through a hydro-turbine to produce electricity by a generator. A low energy consumption process is suggested to regenerate or reconcentrate the agent that is diluted through the FO process. This process is based on the principle of a direct contact heat and mass transfer principle. The working fluid is selected, has a low boiling point, immiscible with water and highly miscible with an alcoholic agent. The main restricting factor of the separation or the regenerating process is the mass ratio of the light hydrocarbon to the diluted DS feed. It is determined and suggested to be in the range of 5???10 times or more. The process seems very promising and it could help making osmotic power commercially applicable. Recent Publications: 1. Manhood H B, Campbell A N, Thorpe R B and Sharif A O (2018) Volumetric heat transfer coefficients prediction of a vapour-liquid-liquid three-phase direct contact heat exchanger. Heat Transfer Engineering, 39(3):208???216. 2. Manhood H B, Baqir A Sh, Campbell A N, Sharif A O and Thorpe R B (2018) Convective heat transfer measurements in a vapour-liquid-liquid three-phase direct contact heat exchanger. Heat and Mass Transfer 54:1697???1705. 3. Gerstandt K, Peinemann K V, Skilhagen S E, Thorsen T and Holt T (2008) Membrane processes in energy supply for an osmotic power plant. Desalination 224:64???72.

Biography :

Hameed B Mahood got his PhD from the University of Surrey, Department of Chemical and Process Engineering, UK (2016). He was previously a Lecturer at the University of Misan-Iraq for more than four years. Prior to this, he was a Senior Researcher at the Iraqi Atomic Energy Commission, and then a Senior Researcher at the Iraqi Ministry of Science and Technology. He obtained his first degree in Chemical/Nuclear Engineering from Baghdad University in 1996, followed by an MSc in Nuclear Engineering from Baghdad University in 1998. He has several years of experience in research (about 18 years). The main themes throughout his research have been in the areas of heat transfer and multiphase flow, forward osmosis (FO), reverse osmosis (RO), and their applications in renewable energy and desalination, and energy recovery from low-grade energy resources.

E-mail: hbmahood@yahoo.com